<template>
  <div>
   <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
        <el-alert
        title="注意: 只允许为第三级分类设置相关参数"
        type="warning"
        show-icon
        :closable="false">
        </el-alert>
        <el-row class="cat_opt">
            <el-col>
                <span>选择商品分类：</span>
                  <el-cascader
                    v-model="selectcatekeys"
                    :options="catelist"
                    :props="{ expandTrigger: 'hover',value:'cat_id',label:'cat_name',children:'children'}"
                     @change="handleChange">
                  </el-cascader>
            </el-col>
        </el-row>
        <el-tabs v-model="activeName" @tab-click="tabhandleClick">
            <el-tab-pane label="动态参数" name="many" >
                <el-button type="primary" size="mini" :disabled='isbtndisabled' @click="addDialogVisible=true">添加参数</el-button>
                <el-table :data="manyTabledata" border stripe>
                    <el-table-column type="expand">
                        <template slot-scope="scope">
                            <el-tag closable v-for="(item,i) in scope.row.attr_vals" :key="i" @close="handleclose(i,scope.row)">{{item}}</el-tag>
                            <el-input
                                class="input-new-tag"
                                v-if="scope.row.inputVisible"
                                v-model="scope.row.inputValue"
                                ref="saveTagInput"
                                size="small"
                                @keyup.enter.native="handleInputConfirm(scope.row)"
                                @blur="handleInputConfirm(scope.row)"
                                >
                            </el-input>
                            <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                        </template>
                    </el-table-column>
                    <el-table-column type="index" label="#"></el-table-column>
                    <el-table-column label="参数名称" prop="attr_name"></el-table-column>
                    <el-table-column label="操作" >
                        <template slot-scope="scope">
                            <el-button size="mini" type="primary" icon="el-icon-edit"  @click="showeditdialog(scope.row.attr_id)">编辑</el-button>
                            <el-button size="mini" type="danger" icon="el-icon-delete" @click="deleteeditdialog(scope.row.attr_id)">删除</el-button>
                        </template>
                    </el-table-column>
                </el-table>
            </el-tab-pane>
            <el-tab-pane label="静态属性" name="only" >
                <el-button type="primary" size="mini" :disabled='isbtndisabled'  @click="addDialogVisible=true">添加属性</el-button>
                <el-table :data="onlytabledata" border stripe>
                    <el-table-column type="expand">
                        <template slot-scope="scope">
                            <el-tag closable v-for="(item,i) in scope.row.attr_vals" :key="i" @close="handleclose(i,scope.row)">{{item}}</el-tag>
                            <el-input
                                class="input-new-tag"
                                v-if="scope.row.inputVisible"
                                v-model="scope.row.inputValue"
                                ref="saveTagInput"
                                size="small"
                                @keyup.enter.native="handleInputConfirm(scope.row)"
                                @blur="handleInputConfirm(scope.row)"
                                >
                            </el-input>
                            <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                        </template>
                    </el-table-column>
                    <el-table-column type="index" label="#"></el-table-column>
                    <el-table-column label="属性名称" prop="attr_name"></el-table-column>
                    <el-table-column label="操作" >
                        <template slot-scope="scope">
                            <el-button size="mini" type="primary" icon="el-icon-edit" @click="showeditdialog(scope.row.attr_id)">编辑</el-button>
                            <el-button size="mini" type="danger" icon="el-icon-delete" @click="deleteeditdialog(scope.row.attr_id)">删除</el-button>
                        </template>
                    </el-table-column>
                </el-table>
            </el-tab-pane>
        </el-tabs>
    </el-card>
    <el-dialog
        :title="'添加'+titleText"
        :visible.sync="addDialogVisible"
         width="50%"
         @close="adddialogclose">
        <el-form :model="addForm" :rules="addFormrules" ref="addFormref" label-width="100px">
            <el-form-item :label="titleText" prop="attr_name">
                <el-input v-model="addForm.attr_name"></el-input>
            </el-form-item>
        </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addparams">确 定</el-button>
            </span>
    </el-dialog>
    <el-dialog
        :title="'修改'+titleText"
        :visible.sync="editDialogVisible"
         width="50%"
         @close="editdialogclose">
        <el-form :model="editForm" :rules="editFormrules" ref="editFormref" label-width="100px">
            <el-form-item :label="titleText" prop="attr_name">
                <el-input v-model="editForm.attr_name"></el-input>
            </el-form-item>
        </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editparams">确 定</el-button>
            </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
    data() {
        return {
          catelist:[],
          selectcatekeys:[],
          activeName:'many',
          addDialogVisible:false,
          editDialogVisible:false,
          manyTabledata:[],
          onlytabledata:[],
          addForm:{
              attr_name:''
          },
          editForm:{
          },
          addFormrules:{
              attr_name: [
            { required: true, message: '请输入参数名称', trigger: 'blur' },
            { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
            ]
          },
          editFormrules:{
               attr_name: [
            { required: true, message: '请输入参数名称', trigger: 'blur' },
            { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
            ]
          },
        }
    },
    computed:{
        isbtndisabled(){
            if(this.selectcatekeys.length==3){
                return false
            }
            return true
        },
        cateId(){
            if(this.selectcatekeys.length == 3){
                return this.selectcatekeys[2]
            }
            return null
        },
        titleText(){
            if(this.activeName=="many"){
                return '动态参数'
            }
            return '静态属性'
        }
    },
    created() {
      this.getCatelist()  
    },
    methods: {
       async getCatelist(){
        const {data:res}  = await this.$http.get(`categories`)
        if(res.meta.status!=200) return this.$message.error("获取商品分类数据失败")
        this.catelist = res.data
        console.log(this.catelist);
        },
        handleChange(){

            this.getparamsdata()
        },
        // tab页签点击函数
        tabhandleClick(){
            console.log(this.activeName);
            this.getparamsdata()
            
        },
        async  getparamsdata(){
            if(this.selectcatekeys.length!=3){
               this.selectcatekeys=[]
               this.manyTabledata=[]
               this.onlytabledata = []
               return 
           }
           const {data:resutle} = await this.$http.get(`categories/${this.cateId}/attributes`,{
               params:{
                   sel:this.activeName
               }
           })
           if(resutle.meta.status!=200) return this.$message.error('获取参数列表失败')
           console.log(resutle.data);
            resutle.data.forEach(item=>{
            item.attr_vals =item.attr_vals? item.attr_vals.split(' '):[]
            item.inputVisible = false
            item.inputValue = ''
           })

          
           if(this.activeName == 'many'){
               this.manyTabledata = resutle.data
           }
           this.onlytabledata = resutle.data
        },
        adddialogclose(){
            this.$refs.addFormref.resetFields()
        },
        addparams(){
            this.$refs.addFormref.validate(async valid=>{
                if(!valid) return 
                const {data:res} = await this.$http.post(`categories/${this.cateId}/attributes`,{
                    attr_name:this.addForm.attr_name,
                    attr_sel:this.activeName
                })
                if(res.meta.status!=201) return this.$message.error("添加参数失败")
                this.addDialogVisible = false
                this.getparamsdata()
                return this.$message.success("添加参数成功")
            })   
        },
        async showeditdialog(attr_id){
                
                const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,{
                    params:{
                        attr_sel:this.activeName
                    }
                })
                if(res.meta.status!=200) return this.$message.error("获取参数信息失败")
                this.editForm = res.data
                this.editDialogVisible=true
            },
         editdialogclose(){
             this.$refs.editFormref.resetFields()
         },
         editparams(){
             this.$refs.editFormref.validate(async vaild=>{
                 if(!vaild) return
                const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{
                     attr_name:this.editForm.attr_name,
                     attr_sel:this.activeName
                 })
                 if(res.meta.status!=200) return this.$message.error("编辑参数失败")
                 this.$message.success("编辑参数成功")
                 this.getparamsdata()
             })
             this.editDialogVisible =false
         },
        async deleteeditdialog(attr_id){
        const confireResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confireResult!='confirm')
        {
            return this.$message.info("取消了当前删除操作")
        }
        const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}}`)
        if(res.meta.status!=200) return this.$message.info("取消了当前删除操作")
        this.$message.success("成功删除当前参数")
        this.getparamsdata()
         },
          handleInputConfirm(row){
             if(row.inputValue.trim().length==0) {
                 row.inputValue = ''
                 row.inputVisible =false
                 return 
             }
            row.attr_vals.push(row.inputValue.trim())
            this.saceattrvalus(row)
            row.inputValue = ''
            row.inputVisible = false
             
         },
        async saceattrvalus(row){
             const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
                attr_name:row.attr_name,
                attr_sel :row.attr_sel,
                attr_vals:row.attr_vals.join(' '),
            })
            if(res.meta.status!=200) return this.$message.error("修改参数项失败")
            this.$message.success("修改参数项成功")
         },
         showInput(row){
             row.inputVisible =true
             this.$nextTick(_ => {
            this.$refs.saveTagInput.$refs.input.focus();
             });
         },
         handleclose(i,row){
            row.attr_vals.splice(i,1)
            this.saceattrvalus(row)
         }
    },
}
</script>

<style scoped>
.cat_opt{
    margin-top: 10px;
}
.input-new-tag{
    width: 120px;
}
</style>